/Engine/Source/Runtime/MovieScene/Public/EntitySystem/MovieSceneEntityFactory.h
Specifies a mutual inclusivity relationship along with a custom initializer for initializing the mutual component(s)
void DefineMutuallyInclusiveComponents ( [FComponentTypeID](API\Runtime\MovieScene\EntitySystem\FComponentTypeID) InComponentA, std::initializer_list< [FComponentTypeID](API\Runtime\MovieScene\EntitySystem\FComponentTypeID) > InMutualComponents, [FMutuallyInclusiveComponentParams](API\Runtime\MovieScene\EntitySystem\FMutuallyInclusiveComponentParam-) && Params )